Radio apparatus



April 23, 1.929. I A. F. SANFORD 1,710,553

RADIO APPARATUS Filed. Aug.l8,1925 3Sheets-Sheet 1 PM" I 1 mo April 23, 1929. SANFORD 1,710,553

RADIO APPARATUS Filed Aug. 18, 1925 5 Sheets-Shae} 2 A1 3 I W f A as A Patented Apr. 23, 1 929.

1 1,710,553 PATENT OFFICE- UNITED STATES ALFRED F. SANFORD, 0F KNOXVILLE, TENNESSEE,

RADIO APPARATUS.

Application filed August 1,8, 1925. Serial No. 51,067.

This apparatus relates especially to means for bringing a radio-receiving apparatus into tune with the sending apparatus at different sending stations. I

An object of this invention is to associate with the tuning members of a radio-receiving apparatus means for moving the tuning 1116111. bers into positions whereby they are brought into tune with a sending apparatus of chosen sending stations,the receiving apparatus including members bearing record receiving surfaces and movable in fixed relation with the tuning members, to the end that when the tuning members havebeen moved into posir tions bringing those members into tune with ceiving surfaces are again in the position in which they were made. It might also be said that the members bearing the record-receiving surfaces may be moved until those records are again in the positions in which they were made. For, as already stated, there is to be a fixed relation between the tuning mem bers and the members bearing the record-receiving surfaces. I r

The apparatus illustrated and described by this application comprises three tuning shafts and three wheels of equal diameterand on a common axial line and each bearing on its perimeter a record-receiving surface. One. of said surfaces is to receive records concerning one of the tuning shafts; another of said surfaces is to receive records concerning another of the tuning shafts; and the third of said surfaces to receive records concerning the third of said tuning shafts.

These wheels are rotatable independently of each other and each wheel is connected by gearing to one of the tuning shafts, whereby the turning of said wheel will cause the turning of said shaft. The wheels are of suflicient diameter to produce a circumference of such dimension as will provide a long record-receiving surface. Furthermore, this extended circumference willallow a relatively large part of said circumference to pass a given point during a relatively small fractlonal movement of thecorresponding tunm-g shaft, whereby record-receiving space will be available for noting sending stations with which the receiving mechanism may be brought into tune by very slight turning movement of the tuning shaft.

In the accompanying drawings,

Fig. 1 is a front elevation of a radio-receivingapparatus embodying my improvement, theupperpart of the front wall of the body of the apparatus being broken away to expose the interior mechanisi 1 1 1g. 2 is an upright SGCblOl'l on the axial l1ne of the wheels which bear recordrreceivlng surfaces and from which wheels motion is transmitted to the'tunmg shafts;

Fig. 3 is a detail section on the line, 33,

of Fig. 1, lookingvtoward the left;

Fig. 1 is anupright section on the line, 4ll, of Fig. 1 looking toward theleft ;v

Fig. 5 is an upright section on the line,

.55, of Fig. 1, looking toward the left;

Fig. 6 is an upright section on the line,

66, of Fig. 1, looking toward the left;

Fig. 7 is an upright section on the line, 7-.7, of Fig. 1,, looking toward the left.

Referring to said drawings, A is the front wall of the apparatus. A is the base and A is the top of the apparatus. A is the right hand end wall. A? is the left hand end wall.

The wall, A is also the right hand wall ofv the compartment for the record-receiving wheels. A is the left hand wall of that compartment.- A is the top wall-of that compartment. A is the front wall of that compartment. An inner upright wall, A is parallel to the front wall, A, and forms a support for the tun mg shafts, B, C and D, and the gearing .1 T1 I: associated with those shafts. mach 01. said shafts has a bearing 1n the wall, A and proects forward through said wall. I On the forward end of the shaft, B, is lined a bevel gear wheel, B whichmcshes with a smaller bevel gear wheel, 13?, which surrounds and is fixed on the horizontal drive shaft, B which rests in two bearings, B seated on the front face'of the wall, A The shaft, B extends toward the left through the record wheel compartment and has its left hand end resting in a bearing, B which bearing is seatcdin the record compartment wall, A. Adjacent the wall, A a record-receiving wheel, 13, surrounds and is fixed to said shaft by means of a set screw, 13.

' If this wheel is rotated, the shaft, B and the bevel gear wheel, B are also rotated. Rotating the bevel gear wheel, B causes the rotation of the bevel gear wheel, B and the tuning shaft, B.

A. spur gear wheel, C surrounds and is fixed to the forward end of the tuning shaft, 0. That spur gear wheel meshes with a spur gear wheel, G which is integral with the hub of the bevel gear wheel, C which surrounds and is fixed on the rotatable shaft, C, which is seated in the bearing, C, which is seated in the wall, A The bevel gear Wheel, C meshes with a bevel gear whee, C, which surrounds and is fixed on the shaft, G which is parallel to the shaft, B and rests in three bearings, C seated on the front face of the inner wall, A above the level of the I shaft, B". A spur gear wheel, C, surrounds and is lined to the shaft, G at the left of,

the left hand bearing, C That spur gear wheel meshes with. a similar spur gear whee G which surrounds and is fixed on the sleeve, C, which loosely surrounds the shaft, B Said sleeve extends nearly to the hub of the wheel, B. A record-receiving wheel, 6, surrounds said sleeve and is fixed thereto by means of a set screw, C. Turning the wheel, C, will cause the turning of the sleeve, (1, and the spur gear wheel, C That will cause the turning of the spur gear wheel, C, the shaft, C the bevel gear wheel, C, and the bevel gear wheel, C whereby the spur gear wheels,-C and C and the tuning shaft, 0, are turned.

A spur gear wheel, D surrounds and is fixed to the forward end of the tuning shaft, D, and meshes with a spur gear wheel, D which is integral with the hub of the bevel gear wheel, D which surrounds and is fixed to the shaft, D which is rotatable in the bearing, D which is seated in' the wall, A he bevel gear wheel, 1), meshes with the bevel gear wheel, D, which surrounds and is fixed on the shaft, D which is parallel to and below the level of the shaft, B, and rests rotatably in three bearings, D which are'supported on the front face of the wall, A

A spur gear wheel, D surrounds and is fixed to the left hand end of the shaft, D and meshes with a spur gear wheel, -D, which surrounds and is immovably fixed on the sleeve, D, which loosely surrounds the sleeve, 6. The wheel, I), the third-of the record-receiving wheels, surrounds the sleeve, 1), and is iminovably secured thereto by means of the set screw, 1).

Turning the wheel, D, will cause the turning of the'sleeve, D, the spur gear wheels, 1) and l), and the shaft, l), and the bevel gear wheels, 1) and D and the spur gear wheel, D whereby the spur gear wheel, D and the tuning shaft, l), are turned.

The sleeve, C is to so loosely on the shaft, B, and the sleeve, 1), is to fit so loosely on the sleeve, G, as to permit turning any of the wheels w1thout turning another through frictional engagement between the shaft, B and the sleeves.

The forward upper part of the compartment in which the record-receivingwheels are located is open to expose those wheels to view, and to permit them to be grasped by the hands of the operator to turn those wheels.

The operation is as follows: I

lVhen this receiving apparatus is to be brought into tune with a chosen sending station, any one of the three record-receiving wheels, B, C and D is engaged by the hand of the operator and turned until the tuning shaft associated with that wheel is in tune, it being understood that the operator stands at the front of the apps ratus, Then another of said wheels is turned in the same manner until the tuning shaft associated wit-h that wheel is in tune. Then the third of said wheels is similarly turned until the tuning shaft associated with that wheel is in tune. Then a record identifying that sending station is placed on the perimeter of each of the three wheels. This record is to be made in association with a relatively stationary guide or indicator. That guide or indicator might be the upper edge of the front wall, A301 the record wheel compartment. The drawings show a guide or indicator, A", having a foot, A, seated on the upper edge of the front wall, A the foot being secured by means of screws, A. Thus the body of this indicator is brought close to the face of the wheels. The upper edge of this indicator or guide may be used for placing the record of the sending station on the wheels immediately above the indicator- But the drawing shows the body of the indicator slotted, whereby a definite space on the wheel faces is exposed for receiving the record. Thus the operator has the choice of placing the records into the slot or immediately above the upper edge of the indicator. The record made on ach wheel is to identify the sending station. The record may consist of the name or'the symbols representing the sending station, or both the name and the symbols may be used.

Fig. 1 ofthe drawings shows in the slot space, as a record, MIAMI-WMBF, on each of the three wheels.

If the apparatus is to bebrought into tune with another sending station, the wheels are to be turned successively until-each of the three tuning shafts is in tune with the new sending station. Then a record identifying that record-receiving station is placed on the wheels in the manner already described. When it is desired to again bring the receiving apparatus into tune with a sending sta-' tion with which this apparatus has been previously brought into tune, the three wheels areturned to bring the records identifying that sending station again into position at the faceon each wheel is as long as the circumfen,

ence of that wheel. 'This makes a recordreceiving surface which is long relative to the length of the path through which the tuning mechanism supported by the tuning shaft turns. Thus two important results are attained. (1) A long movement of the wheel surface imparts to the tuning shaft and the mechanism supported by the shaft a move ment which is much shorter. This makes possible action similar to micrometer action for the adjustment of the tuning shaft; this long recording surface provides ample room for the entry of records of receiving stations which require nearly the same positions of the tuning shafts.

The gearing between each of the wheels, B", C and D and the corresponding tuning shaftsis to be so proportionedas to allow the wheels to turn faster than the corresponding tuning shafts turn. Thisratio is preferably two to one, so that each wheel will make a full turn while the'corresponding tuning shaft makes only one-half turn. Thus the entire perimeter of each wheel is made available for recordin I It is to be understood that instead of making records directly on the perimeter of the wheels, paper or similarsheet-form material may be applied to the surface of the wheels and records placed on that material.

I claim as my invention:

1. In an apparatus of the kind described, the combination with a plurality of tuning shafts, of a plurality of members shiftable independently of each other and having record-receiving surfaces, a transmission shaft for each of the tuning shafts, gearing connectin g each of said transmission shafts with one of the tuning shafts, and gearing connecting each of said transmission shafts with one of said shiftable members, whereby moving one of said shiftable members will cause transmission of motion to the corresponding tuning shaft, substantially as described.

2. In an apparatus of the kind described, the combination with a plurality of tuning shafts, of a plurality of members shiftable independently of each other and having recordreceiving surfaces, parallel transmission shafts, gearing connecting each of said'transmission shafts with one of the tuning shafts, and gearing connecting each of said transmission shafts with one of said shiftable members, whereby moving one of'said shiftable members will cause transmission of motion to the corresponding tuning shaft, substantially as described.

3. In an apparatus of the kind described,

the combination with a plurality of tuning shafts, of a plurality of members shift'able independently of each other on a common axial line and having record-receiving surfaces,'a transmission shaft for each of the tuning shafts, gearing connecting each of said transmission shafts with one of the tuning shafts, and gearing connecting each of said transmission ShaftS'With one of said shiftable members, whereby moving one of said shiftable members will cause transmission of motion to the corresponding tuning shaft, substanti ally as described.

4. In an apparatus of thekind described, the combination with a plurality of tuning shafts placed on parallel axial lines, of a plurality of record-receiving wheels located in parallel planes and on a'common axial line, transverse to the axes of the tuning shafts and gearing connecting each of said wheels with one of the tuning shafts whereby provision is made for the turning of the'tuning shafts by turning said wheels, substantially as described.

5. In an apparatus of the kind described, the combinationwith a plurality of tuning shafts placed on parallel axial lines, of a plurality of record-receiving wheels located in parallel planes and on a common axial line, a plurality of parallel transmission shafts one of which is located between each wheel and one of the tuning shafts and in operative relation with'said wheel, and gearing connecting said transmission shaft and said tuning shaft, substantially as described.

, 6. In an apparatus of the kind described, the combination with a plurality "of tuning shafts placed on parallel axial lines, of a plurality of members located side by side and having endless record-receiving surfaces, and gearing including bevel cog wheels connecting said members with said tuning shafts, substantially as described.

7. In an apparatus of the kind described, the combination with a plurality of tuning shafts placed on parallel axial lines, of a plurality of members located side by side and having endless record-receivingsurfaces, of equal length, and gearing including bevel cog wheels connecting said members with said tuning shafts, substantially as described.

8. In an apparatus of the kind described, the combination with a plurality of tuning shafts placed on parallel axial lines, of plural record-receiving mechanism comprising parts having record-receiving surfaces and adapted to be moved through orbital paths, and means including bevel cog wheels connecting the record-receiving mechanism with the tuning shafts whereby the tuning shafts will turn while the record-receiving mechanism is actuated to move the record-receiving surfaces in the orbital paths, substantially as described. I

9. In an apparatus of the kind described, the combination with a. plurality of horizontal tuning shafts placed on parallel axial lines, of a plurality of transmission shafts transverse to the tuning shafts, bevel gearing connecting the transmission shafts to the tuning shafts, record-receiving wheels 10- cated on a common axial line and in operative relation with the transmission shafts, substantially as described;

10. In an apparatus of the kind described, the combination with a plurality of tuning shafts, of a plurality of transmission shafts in operative relation with the tuning shafts, a record-receiving wheel fixed on one of said transmission shafts, a sleeve surrounding a part of said transmission shaft, a Wheel surrounding said shaft and fixed to said sleeve, a tranmission shaft in operative relation with said sleeve and one of the tuning shafts, a second sleeve,surrounding the first sleeve, a record-receiving wheel surrounding the first sleeve and secured to the second sleeve, and means operatively connecting the second sleeve and another tuning shaft, substantially as described.

11. In an apparatusof the kind described, the combination with a plurality of tuning shafts placed. on parallel axial lines, of a corresponding number of members having record-receiving surfaces arranged to travel in paths located in planes which are parallel to each other and to the tuning shafts, and transmission means connecting said record-receiving members with the tuning shafts.

12. In. an apparatus of the kind described, the combination with a plurality of tuning members, of a corresponding number of tuning member actuating Wheels placed upright and parallel to each other and near each other and in planes perpendicular to the front of the apparatus and having their perimeter faces directed toward the front of the apparatus and in location to be conveniently reached and engaged eithersingly or together by a hand of the operator for separately or simultaneously turning said wheels for adjusting the tuning members, and each wheel being of a long circumference and having a perimeter of Width and nature adapted for writing thereon records of positions of the tuning member positions when said members have been positioned in harmony with each other and in tune with a chosen sending station, said writing being horizontal and transverse to the perimeter face and in relation to a stationary part of the apparatus, means in operative relation with one of said wheels and one of said tuning members for transmitting motion from said wheel to said tuning member, and means in operative relation with another of said Wheels and another tuning member for transmitting motion from said wheel to said tuning member.

In testimony whereof I have signed my name, this 1st day of August, in the year one thousand nine hundred and twenty-five.

ALFRED F. SANFORD. 

